Examine source code of Treetop

{
  "manifest_version": 3,
  "name": "Treetop",
  "description": "__MSG_extensionDescription__",
  "version": "3.1.0",
  "author": "Max Smolens",
  "homepage_url": "https://github.com/msmolens/treetop",
  "default_locale": "en",
  "icons": {
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "64": "icons/icon64.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png",
    "256": "icons/icon256.png"
  },
  "background": {
    "scripts": [
      "background_script.js"
    ]
  },
  "action": {
    "default_icon": {
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "64": "icons/icon64.png",
      "96": "icons/icon96.png",
      "128": "icons/icon128.png",
      "256": "icons/icon256.png"
    },
    "default_title": "Treetop"
  },
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "bookmarks",
    "contextMenus",
    "history",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "treetop@maxsmolens.org",
      "strict_min_version": "118.0"
    }
  }
}